The term "Indo18" often refers to third-party distribution or streaming sites popular in Indonesia that aggregate adult content. These platforms typically use SEO-heavy titles—like the one you provided—to help users find specific Japanese (JAV) titles that have been uploaded or subbed for local audiences.
Yu Sasamoto (known as @yuuu1116ura on social media) initially built a following on platforms like X (formerly Twitter). Her transition into the AV industry under Soft On Demand (SOD) was highly publicized because of her backstory: The term "Indo18" often refers to third-party distribution